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QUICK ANSWER
"Qué haces" is a form of "qué haces", a phrase which is often translated as "what you're doing". "Carlos" is a proper noun which is often translated as "Charles". Learn more about the difference between "Carlos" and "qué haces" below.
Carlos(
kahr
-
lohs
)
A proper noun refers to the name of a person, place, or thing.
proper noun
a. Charles
Mi hermano se llama Carlos, como mi abuelo.My brother is named Charles, after my grandfather.
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qué haces(
keh
 
ah
-
sehs
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
1.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(singular)
a. what you're doing
Explícame qué haces aquí tan tarde.Tell me what you're doing here so late.
b. what you do
Sigo sin saber qué haces, Martín.I still don't know what you do, Martin.
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